{"id":475859,"date":"2023-08-09T07:23:51","date_gmt":"2023-08-09T07:23:51","guid":{"rendered":""},"modified":"2023-09-05T11:11:25","modified_gmt":"2023-09-05T11:11:25","slug":"anomaly-detection","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/anomaly-detection\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng"},"content":{"rendered":"<p>Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u00e1t hi\u1ec7n ngo\u1ea1i l\u1ec7, \u0111\u1ec1 c\u1eadp \u0111\u1ebfn qu\u00e1 tr\u00ecnh x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu d\u1eef li\u1ec7u sai l\u1ec7ch \u0111\u00e1ng k\u1ec3 so v\u1edbi h\u00e0nh vi d\u1ef1 ki\u1ebfn. Nh\u1eefng \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng n\u00e0y c\u00f3 th\u1ec3 cung c\u1ea5p th\u00f4ng tin quan tr\u1ecdng, th\u01b0\u1eddng l\u00e0 quan tr\u1ecdng, trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, bao g\u1ed3m ph\u00e1t hi\u1ec7n gian l\u1eadn, an ninh m\u1ea1ng v\u00e0 theo d\u00f5i t\u00ecnh tr\u1ea1ng h\u1ec7 th\u1ed1ng. Do \u0111\u00f3, c\u00e1c k\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng c\u00f3 t\u1ea7m quan tr\u1ecdng h\u00e0ng \u0111\u1ea7u trong c\u00e1c l\u0129nh v\u1ef1c qu\u1ea3n l\u00fd l\u01b0\u1ee3ng d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3, nh\u01b0 c\u00f4ng ngh\u1ec7 th\u00f4ng tin, an ninh m\u1ea1ng, t\u00e0i ch\u00ednh, ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe, v.v.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c c\u1ee7a ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>Kh\u00e1i ni\u1ec7m ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng c\u00f3 th\u1ec3 b\u1eaft ngu\u1ed3n t\u1eeb c\u00f4ng vi\u1ec7c c\u1ee7a c\u00e1c nh\u00e0 th\u1ed1ng k\u00ea v\u00e0o \u0111\u1ea7u th\u1ebf k\u1ef7 19. M\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng s\u1edbm nh\u1ea5t c\u1ee7a kh\u00e1i ni\u1ec7m n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong l\u0129nh v\u1ef1c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng cho c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t, n\u01a1i c\u1ea7n ph\u00e1t hi\u1ec7n nh\u1eefng bi\u1ebfn th\u1ec3 kh\u00f4ng mong \u0111\u1ee3i trong h\u00e0ng h\u00f3a \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t. B\u1ea3n th\u00e2n thu\u1eadt ng\u1eef n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u1ed5 bi\u1ebfn r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c khoa h\u1ecdc m\u00e1y t\u00ednh v\u00e0 \u0111i\u1ec1u khi\u1ec3n h\u1ecdc v\u00e0o nh\u1eefng n\u0103m 1960 v\u00e0 1970 khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng thu\u1eadt to\u00e1n v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c m\u1eabu b\u1ea5t th\u01b0\u1eddng trong b\u1ed9 d\u1eef li\u1ec7u.<\/p>\n<p>Nh\u1eefng \u0111\u1ec1 c\u1eadp \u0111\u1ea7u ti\u00ean v\u1ec1 h\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng t\u1ef1 \u0111\u1ed9ng trong l\u0129nh v\u1ef1c an ninh m\u1ea1ng v\u00e0 ph\u00e1t hi\u1ec7n x\u00e2m nh\u1eadp c\u00f3 t\u1eeb cu\u1ed1i nh\u1eefng n\u0103m 1980 v\u00e0 \u0111\u1ea7u nh\u1eefng n\u0103m 1990. S\u1ef1 gia t\u0103ng s\u1ed1 h\u00f3a c\u1ee7a x\u00e3 h\u1ed9i v\u00e0 s\u1ef1 gia t\u0103ng ti\u1ebfp theo c\u1ee7a c\u00e1c m\u1ed1i \u0111e d\u1ecda tr\u00ean m\u1ea1ng \u0111\u00e3 d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p tinh vi \u0111\u1ec3 ph\u00e1t hi\u1ec7n nh\u1eefng \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng trong l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng v\u00e0 h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<h2>Hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc v\u1ec1 ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>C\u00e1c k\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng v\u1ec1 c\u01a1 b\u1ea3n t\u1eadp trung v\u00e0o vi\u1ec7c t\u00ecm ki\u1ebfm c\u00e1c m\u1eabu d\u1eef li\u1ec7u kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi h\u00e0nh vi d\u1ef1 ki\u1ebfn. Nh\u1eefng \u201cs\u1ef1 b\u1ea5t th\u01b0\u1eddng\u201d n\u00e0y th\u01b0\u1eddng chuy\u1ec3n th\u00e0nh th\u00f4ng tin quan tr\u1ecdng v\u00e0 c\u00f3 th\u1ec3 x\u1eed l\u00fd \u0111\u01b0\u1ee3c trong m\u1ed9t s\u1ed1 l\u0129nh v\u1ef1c \u1ee9ng d\u1ee5ng.<\/p>\n<p>C\u00e1c b\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c chia th\u00e0nh ba lo\u1ea1i:<\/p>\n<ol>\n<li>\n<p><strong>\u0110i\u1ec3m d\u1ecb th\u01b0\u1eddng<\/strong>: M\u1ed9t phi\u00ean b\u1ea3n d\u1eef li\u1ec7u ri\u00eang l\u1ebb s\u1ebd b\u1ea5t th\u01b0\u1eddng n\u1ebfu n\u00f3 qu\u00e1 xa so v\u1edbi ph\u1ea7n c\u00f2n l\u1ea1i.<\/p>\n<\/li>\n<li>\n<p><strong>S\u1ef1 b\u1ea5t th\u01b0\u1eddng v\u1ec1 ng\u1eef c\u1ea3nh<\/strong>: S\u1ef1 b\u1ea5t th\u01b0\u1eddng t\u00f9y theo ng\u1eef c\u1ea3nh c\u1ee5 th\u1ec3. Lo\u1ea1i b\u1ea5t th\u01b0\u1eddng n\u00e0y th\u01b0\u1eddng g\u1eb7p trong d\u1eef li\u1ec7u chu\u1ed7i th\u1eddi gian.<\/p>\n<\/li>\n<li>\n<p><strong>T\u1eadp th\u1ec3 d\u1ecb th\u01b0\u1eddng<\/strong>: M\u1ed9t t\u1eadp h\u1ee3p c\u00e1c tr\u01b0\u1eddng h\u1ee3p d\u1eef li\u1ec7u gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng.<\/p>\n<\/li>\n<\/ol>\n<p>C\u00e1c chi\u1ebfn l\u01b0\u1ee3c ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh c\u00e1c lo\u1ea1i sau:<\/p>\n<ol>\n<li>\n<p><strong>Ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea<\/strong>: C\u00e1c ph\u01b0\u01a1ng th\u1ee9c n\u00e0y m\u00f4 h\u00ecnh h\u00f3a h\u00e0nh vi b\u00ecnh th\u01b0\u1eddng v\u00e0 khai b\u00e1o b\u1ea5t k\u1ef3 \u0111i\u1ec1u g\u00ec kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi m\u00f4 h\u00ecnh n\u00e0y l\u00e0 b\u1ea5t th\u01b0\u1eddng.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u01b0\u01a1ng ph\u00e1p d\u1ef1a tr\u00ean Machine Learning<\/strong>: Ch\u00fang li\u00ean quan \u0111\u1ebfn c\u00e1c ph\u01b0\u01a1ng ph\u00e1p h\u1ecdc t\u1eadp c\u00f3 gi\u00e1m s\u00e1t v\u00e0 kh\u00f4ng gi\u00e1m s\u00e1t.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u01a1 ch\u1ebf c\u01a1 b\u1ea3n c\u1ee7a vi\u1ec7c ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>Qu\u00e1 tr\u00ecnh ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng ph\u1ee5 thu\u1ed9c \u0111\u00e1ng k\u1ec3 v\u00e0o ph\u01b0\u01a1ng ph\u00e1p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Tuy nhi\u00ean, c\u1ea5u tr\u00fac c\u01a1 b\u1ea3n c\u1ee7a vi\u1ec7c ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng bao g\u1ed3m ba b\u01b0\u1edbc ch\u00ednh:<\/p>\n<ol>\n<li>\n<p><strong>X\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh<\/strong>: B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean l\u00e0 x\u00e2y d\u1ef1ng m\u00f4 h\u00ecnh v\u1ec1 h\u00e0nh vi \u0111\u01b0\u1ee3c coi l\u00e0 \u201cb\u00ecnh th\u01b0\u1eddng\u201d. M\u00f4 h\u00ecnh n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng b\u1eb1ng nhi\u1ec1u k\u1ef9 thu\u1eadt kh\u00e1c nhau, bao g\u1ed3m c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea, ph\u00e2n c\u1ee5m, ph\u00e2n lo\u1ea1i v\u00e0 m\u1ea1ng l\u01b0\u1edbi th\u1ea7n kinh.<\/p>\n<\/li>\n<li>\n<p><strong>Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/strong>: B\u01b0\u1edbc ti\u1ebfp theo l\u00e0 s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh \u0111\u00e3 x\u00e2y d\u1ef1ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh nh\u1eefng \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng trong d\u1eef li\u1ec7u m\u1edbi. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch t\u00ednh to\u00e1n \u0111\u1ed9 l\u1ec7ch c\u1ee7a t\u1eebng \u0111i\u1ec3m d\u1eef li\u1ec7u so v\u1edbi m\u00f4 h\u00ecnh h\u00e0nh vi b\u00ecnh th\u01b0\u1eddng.<\/p>\n<\/li>\n<li>\n<p><strong>\u0110\u00e1nh gi\u00e1 b\u1ea5t th\u01b0\u1eddng<\/strong>: B\u01b0\u1edbc cu\u1ed1i c\u00f9ng l\u00e0 \u0111\u00e1nh gi\u00e1 c\u00e1c \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 quy\u1ebft \u0111\u1ecbnh xem ch\u00fang l\u00e0 \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng th\u1ef1c s\u1ef1 hay ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u b\u1ea5t th\u01b0\u1eddng.<\/p>\n<\/li>\n<\/ol>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng ch\u00ednh l\u00e0m cho k\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng tr\u1edf n\u00ean \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch:<\/p>\n<ol>\n<li><strong>T\u00ednh linh ho\u1ea1t<\/strong>: Ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng tr\u00ean nhi\u1ec1u l\u0129nh v\u1ef1c.<\/li>\n<li><strong>Ph\u00e1t hi\u1ec7n s\u1edbm<\/strong>: H\u1ecd th\u01b0\u1eddng c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n v\u1ea5n \u0111\u1ec1 s\u1edbm tr\u01b0\u1edbc khi ch\u00fang leo thang.<\/li>\n<li><strong>Gi\u1ea3m ti\u1ebfng \u1ed3n<\/strong>: Ch\u00fang c\u00f3 th\u1ec3 gi\u00fap l\u1ecdc nhi\u1ec5u v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1eef li\u1ec7u.<\/li>\n<li><strong>H\u00e0nh \u0111\u1ed9ng ph\u00f2ng ng\u1eeba<\/strong>: Ch\u00fang cung c\u1ea5p c\u01a1 s\u1edf cho h\u00e0nh \u0111\u1ed9ng ph\u00f2ng ng\u1eeba b\u1eb1ng c\u00e1ch \u0111\u01b0a ra nh\u1eefng c\u1ea3nh b\u00e1o s\u1edbm.<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>C\u00f3 nhi\u1ec1u c\u00e1ch \u0111\u1ec3 ph\u00e2n lo\u1ea1i c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 trong nh\u1eefng c\u00e1i ph\u1ed5 bi\u1ebfn nh\u1ea5t:<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center;\">Ph\u01b0\u01a1ng ph\u00e1p<\/th>\n<th style=\"text-align: left;\">S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center;\">Th\u1ed1ng k\u00ea<\/td>\n<td style=\"text-align: left;\">S\u1eed d\u1ee5ng c\u00e1c b\u00e0i ki\u1ec3m tra th\u1ed1ng k\u00ea \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Gi\u00e1m s\u00e1t<\/td>\n<td style=\"text-align: left;\">S\u1eed d\u1ee5ng d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c g\u1eafn nh\u00e3n \u0111\u1ec3 hu\u1ea5n luy\u1ec7n m\u00f4 h\u00ecnh v\u00e0 ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">B\u00e1n gi\u00e1m s\u00e1t<\/td>\n<td style=\"text-align: left;\">S\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p d\u1eef li\u1ec7u c\u00f3 nh\u00e3n v\u00e0 kh\u00f4ng nh\u00e3n \u0111\u1ec3 hu\u1ea5n luy\u1ec7n.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Kh\u00f4ng \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t<\/td>\n<td style=\"text-align: left;\">Kh\u00f4ng c\u00f3 nh\u00e3n n\u00e0o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e0o t\u1ea1o, khi\u1ebfn n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c t\u00ecnh hu\u1ed1ng th\u1ef1c t\u1ebf.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i:<\/p>\n<ol>\n<li><strong>An ninh m\u1ea1ng<\/strong>: X\u00e1c \u0111\u1ecbnh l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp m\u1ea1ng b\u1ea5t th\u01b0\u1eddng, c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u m\u1ed9t cu\u1ed9c t\u1ea5n c\u00f4ng m\u1ea1ng.<\/li>\n<li><strong>Ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe<\/strong>: X\u00e1c \u0111\u1ecbnh nh\u1eefng b\u1ea5t th\u01b0\u1eddng trong h\u1ed3 s\u01a1 b\u1ec7nh nh\u00e2n \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 s\u1ee9c kh\u1ecfe ti\u1ec1m \u1ea9n.<\/li>\n<li><strong>Ph\u00e1t hi\u1ec7n gian l\u1eadn<\/strong>: Ph\u00e1t hi\u1ec7n c\u00e1c giao d\u1ecbch th\u1ebb t\u00edn d\u1ee5ng b\u1ea5t th\u01b0\u1eddng \u0111\u1ec3 ng\u0103n ch\u1eb7n gian l\u1eadn.<\/li>\n<\/ol>\n<p>Tuy nhi\u00ean, vi\u1ec7c s\u1eed d\u1ee5ng t\u00ednh n\u0103ng ph\u00e1t hi\u1ec7n \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u1eed l\u00fd d\u1eef li\u1ec7u c\u00f3 nhi\u1ec1u chi\u1ec1u, \u0111\u1ed1i ph\u00f3 v\u1edbi t\u00ednh ch\u1ea5t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u1eabu v\u00e0 kh\u00f3 \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a c\u00e1c \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. C\u00e1c gi\u1ea3i ph\u00e1p cho nh\u1eefng th\u00e1ch th\u1ee9c n\u00e0y \u0111ang \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n v\u00e0 bao g\u1ed3m t\u1eeb c\u00e1c k\u1ef9 thu\u1eadt gi\u1ea3m k\u00edch th\u01b0\u1edbc \u0111\u1ebfn ph\u00e1t tri\u1ec3n c\u00e1c m\u00f4 h\u00ecnh ph\u00e1t hi\u1ec7n d\u1ecb th\u01b0\u1eddng th\u00edch \u1ee9ng h\u01a1n.<\/p>\n<h2>Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng so v\u1edbi c\u00e1c kh\u00e1i ni\u1ec7m t\u01b0\u01a1ng t\u1ef1<\/h2>\n<p>So s\u00e1nh v\u1edbi c\u00e1c \u0111i\u1ec1u kho\u1ea3n t\u01b0\u01a1ng t\u1ef1 bao g\u1ed3m:<\/p>\n<table>\n<thead>\n<tr>\n<th style=\"text-align: center;\">Thu\u1eadt ng\u1eef<\/th>\n<th style=\"text-align: left;\">S\u1ef1 mi\u00eau t\u1ea3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"text-align: center;\">Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/td>\n<td style=\"text-align: left;\">X\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu b\u1ea5t th\u01b0\u1eddng kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi h\u00e0nh vi d\u1ef1 ki\u1ebfn.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Nh\u1eadn d\u1ea1ng m\u1eabu<\/td>\n<td style=\"text-align: left;\">X\u00e1c \u0111\u1ecbnh v\u00e0 ph\u00e2n lo\u1ea1i c\u00e1c m\u1eabu theo c\u00e1ch t\u01b0\u01a1ng t\u1ef1.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\">Ph\u00e1t hi\u1ec7n x\u00e2m nh\u1eadp<\/td>\n<td style=\"text-align: left;\">M\u1ed9t lo\u1ea1i ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ed1i \u0111e d\u1ecda tr\u00ean m\u1ea1ng.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m t\u01b0\u01a1ng lai trong ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>Vi\u1ec7c ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng d\u1ef1 ki\u1ebfn s\u1ebd \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i \u0111\u00e1ng k\u1ec3 t\u1eeb nh\u1eefng ti\u1ebfn b\u1ed9 trong tr\u00ed tu\u1ec7 nh\u00e2n t\u1ea1o v\u00e0 h\u1ecdc m\u00e1y. Nh\u1eefng ph\u00e1t tri\u1ec3n trong t\u01b0\u01a1ng lai c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt h\u1ecdc s\u00e2u \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c h\u01a1n v\u1ec1 h\u00e0nh vi b\u00ecnh th\u01b0\u1eddng v\u00e0 ph\u00e1t hi\u1ec7n nh\u1eefng \u0111i\u1ec3m b\u1ea5t th\u01b0\u1eddng. Ngo\u00e0i ra c\u00f2n c\u00f3 ti\u1ec1m n\u0103ng trong vi\u1ec7c \u00e1p d\u1ee5ng h\u1ecdc t\u0103ng c\u01b0\u1eddng trong \u0111\u00f3 c\u00e1c h\u1ec7 th\u1ed1ng h\u1ecdc c\u00e1ch \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh d\u1ef1a tr\u00ean h\u1eadu qu\u1ea3 c\u1ee7a c\u00e1c h\u00e0nh \u0111\u1ed9ng trong qu\u00e1 kh\u1ee9.<\/p>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/h2>\n<p>M\u00e1y ch\u1ee7 proxy c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb vi\u1ec7c ph\u00e1t hi\u1ec7n s\u1ef1 b\u1ea5t th\u01b0\u1eddng. V\u00ec m\u00e1y ch\u1ee7 proxy \u0111\u00f3ng vai tr\u00f2 trung gian gi\u1eefa ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i v\u00e0 c\u00e1c trang web ho\u1eb7c t\u00e0i nguy\u00ean m\u00e0 h\u1ecd truy c\u1eadp n\u00ean ch\u00fang c\u00f3 th\u1ec3 t\u1eadn d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu b\u1ea5t th\u01b0\u1eddng trong l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp m\u1ea1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1ed1i \u0111e d\u1ecda ti\u1ec1m \u1ea9n, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng DDoS ho\u1eb7c c\u00e1c d\u1ea1ng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c h\u1ea1i kh\u00e1c. H\u01a1n n\u1eefa, proxy c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00ednh n\u0103ng ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 qu\u1ea3n l\u00fd c\u00e1c m\u1eabu l\u01b0u l\u01b0\u1ee3ng truy c\u1eadp b\u1ea5t th\u01b0\u1eddng, c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng c\u00e2n b\u1eb1ng t\u1ea3i v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3 c\u1ee7a ch\u00fang.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ol>\n<li><a href=\"https:\/\/towardsdatascience.com\/anomaly-detection-techniques-and-solutions-ec6c48d26dad\" target=\"_new\" rel=\"noopener nofollow\">K\u1ef9 thu\u1eadt v\u00e0 gi\u1ea3i ph\u00e1p ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng<\/a><\/li>\n<li><a href=\"https:\/\/dl.acm.org\/doi\/10.1145\/3356267\" target=\"_new\" rel=\"noopener nofollow\">Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng: M\u1ed9t cu\u1ed9c kh\u1ea3o s\u00e1t<\/a><\/li>\n<li><a href=\"https:\/\/ieeexplore.ieee.org\/abstract\/document\/8509219\" target=\"_new\" rel=\"noopener nofollow\">Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng trong l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng<\/a><\/li>\n<li><a href=\"https:\/\/arxiv.org\/abs\/2002.08644\" target=\"_new\" rel=\"noopener nofollow\">Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng: Thu\u1eadt to\u00e1n, Gi\u1ea3i th\u00edch, \u1ee8ng d\u1ee5ng<\/a><\/li>\n<\/ol>","protected":false},"featured_media":467546,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-475859","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Anomaly Detection: A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is anomaly detection?","answer":"<p>Anomaly detection, also known as outlier detection, is the process of identifying data patterns that significantly deviate from expected behavior. These anomalies can provide critical information in various domains, including fraud detection, network security, and system health monitoring.<\/p>"},{"question":"How did anomaly detection originate?","answer":"<p>The concept of anomaly detection originated from the work of statisticians in the early 19th century for quality control in manufacturing processes. It was later adopted in the field of computer science and cybernetics in the 1960s and 1970s to detect anomalous patterns in datasets.<\/p>"},{"question":"What is the underlying mechanism of anomaly detection?","answer":"<p>The fundamental structure of anomaly detection involves three primary steps: Model Building, Anomaly Detection, and Anomaly Evaluation. The \"normal\" behavior is modeled first, then the built model is used to identify anomalies in new data, and finally, the identified anomalies are evaluated.<\/p>"},{"question":"What are some key features of anomaly detection?","answer":"<p>Key features of anomaly detection include versatility across domains, early problem detection, reducing noise to improve data quality, and providing a basis for preventive action by offering early warnings.<\/p>"},{"question":"What are the types of anomaly detection methods?","answer":"<p>Anomaly detection methods can be categorized as Statistical, Supervised, Semi-supervised, and Unsupervised. Statistical methods use statistical tests to detect anomalies, while the others involve machine learning techniques with varying levels of human supervision.<\/p>"},{"question":"How is anomaly detection applied practically?","answer":"<p>Anomaly detection has wide applications in Cybersecurity (unusual network traffic detection), Healthcare (identifying anomalies in patient records), and Fraud Detection (detecting unusual credit card transactions). It's also used in proxy servers to identify unusual patterns in network traffic.<\/p>"},{"question":"How does anomaly detection relate to proxy servers?","answer":"<p>Since proxy servers act as intermediaries between end users and the websites they access, they can use anomaly detection techniques to identify unusual patterns in network traffic. This can help in identifying potential threats and improve their load balancing and overall performance.<\/p>"},{"question":"What is the future of anomaly detection?","answer":"<p>The future of anomaly detection is likely to be influenced by advancements in artificial intelligence and machine learning. These could involve using deep learning techniques to build more accurate models of normal behavior and detect anomalies, and applying reinforcement learning where systems learn to make decisions based on the consequences of past actions.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/475859","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/475859\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/467546"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=475859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}